Machine for treating hides or skins.



-D. P. O'BRIEN. MACHINE FOR TREATING HIDES 0B SKINS.

APPLIGATIOH FILED. OCT. 6, 1903.

Patented Nov. 17, 1908.

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venor- @q M/ TJ /LL n. P. OBRIEN MAOEINB FOB TREATING HIDES 0B SKINS,

APPLIOATIOH FILED OCT. 6, 1903.

. Patented Nov. 17, 1

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W QM M W 5 Ma. n T 0 w w I 1). P. OBRIEN. I MACHINE FOR TREATING HIDES0B SKINS. APPLIUATION FILED 0011.6, 1903.

904,079. w r PaAinted Nov. 17, 1908.

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Patented Nov. 17, 1908.

6 SHEETS-SHEET '1.

I n. P. O'BRIEN; MACHINE FOR TREATING RIDES OB 8KINS.

APPLIOATIb I FILED 0011.6, 1903.

Patented Nov. 17,1908.

6 SHEETS-SHEET 5.

7 fnvnz orx yll/gamb azvu vQvwialg o orneyss UNITED STATES PATENT O ICE.DANIEL P. oBRIEitoF WOBURN, MAssAoiIUsn'r'rs; I

MACHINE FOR TREATINQ HIDES OR SKIN S.

To all whom it may concern:.

Be it known that I, DANIEL P. OBRIEN,

of lVIassachusetts, have invented a certain new and useful Improvementin Machines for Treating Hides or Skins, of which the following is 'aspecification, reference being had therein to the accompanying drawings.

B/Iyimprovements in machines for treating hides or skins are applicableto machines for performing fieshing, unhairing, or avariety of otheroperations upon hides or skins. I have herein represented the same asembodied in a machine which is intended more especially for use infleshing and unhairing hides, but the invention is not restricted to usein machines .for performing these par 7 ticular operations.

In the drawings, Figure 1 is an end'elevation (with shaft 411m sectionand certain minor parts omitted) showing one end of a machine containingthe improvements in one form' of embodiment thereof. Fig. 2 is a viewshowing in elevation, partly in vertical section, the opposite end' ofthe machine from that which is shown in Fig. 1. Fig. 3 shows in frontelevation the end of the machine which is represented .inFigQL Fig. 4

shows in front elevation the end of the machine which is re resented inFig. 2. Fig.

Iplan of the end of the machine which is represented in Figs. 2 and 4,the toggles at suchend, andalso the caps of the bearingsfor theoperating or work roll and feed-roll being omitted Fig. 6 is a view inend elevation showing a modification. Fig. 7 is a detail view showing invertlcal section a portlon of one of the slides or carriers for theboxes of the bed-roll, the

stop which is carried by the said slide or carrier, and one means ofadjusting the said stop. Fig. 8' shows in perspective one-of the spacingpieces which are employed in con nection with the bearings for the workor operating roll.

Having reference to the drawings the opposite end-frames of the machineare designated 1, 2, respectively. These endframes serve as theprincipal sup orts fIor n the present instance they sustain the bearingsfor the different rolls and cylinders which are, employed in the.machine to operate in connection with the hide or skin tobe treated.The inumber and charaeteror construction of Specification of LettersPatent. Application filed. CctoberB, 1903. Serial No. 175,930.

which the bed-roll is mounted with capacity to be moved toward and fromthe operating the said rolls or cylinder s, as .well as the arrangementthereof, may.vary In practice according to the nature of the operationwhich it is desired to perform upon the hide or skin, or accordingto'the views of builders and users of the machine. In the illustratedmachine, there are provided an operating or work-roll 3 having aperiphery of a character suitable for the performance of the operationaforesaid, a bed-roll 4 serving as a movable support for the hide orskin to be treated, and by means of which the said 'hide or skin ispresented to the action of the said operating or work-roll and backed upwhile being acted upon, and a feed-roll 5 between which and the bed-roll4: the hide or skin is compressed and thereby clamped so as to hold thesame securely while being acted upon by the operating or work-roll. Thesaid machine is intended, more especiall for fleshing or unhairing hidesor skins, a d consequently the periphery of the operatingor work-roll isfurnished with spirally arranged knivesor blades, as usual in practice.The bed-roll is covered with a cushion of rubber; By the rotation of thefeed-roll 5 in unison with the bed-roll 4 the hide or skin is fedrelative to the operating or work-r0113 so as to causeall port-ionsthereof to be preseiiilted to the action of the operating or workr0 Inorder to provide for the convenient introduction of the hide or skinwhich is to be made capable of movement bodily relative to one anotherso as to enable them to be separated, as for the convenient applicationof the hide or skin, and then closed together, as for the purpose ofcausing the hide or skin to be acted upon. The particular roll '01"rolls to which relative movement is com municated for the purpose ofeflecting the separation and re-approach of the rolls varies indifl'erent known machines. the invention embodied in a machine 1n orwork-roll and feed-roll.

The shaft 31 of the operating or work-roll is provided .with aband-pulley. 32 shown only in Fig. 4 for the receptionof a driving- 1band (not shown) by means of which power .may be transmitted ,to thesaid roll for the Patented Nov. 1?, a.

I have shown pur ose of rotating the same. The said sha t is journaledin bearings 33, 33, that are fitted. to vertical guideways 34, 34, inthe end-frames 1 and 2, the said bearings resting upon the upper ends ofvertical adjustin screws 331, 331, which latter serve to enabie thebearings and operating or work-roll to be adjusted vertically. Caps 341,341,.

employed in connection with the said guideways have applied theretovertical screws 342, 342, engaging by their lower ends with the tops ofthe bearings 33, 3-3, to h'old the bearin s closed upon the shaft 31and" revent t e said bearings from risingf-r: he-

front and rear sides of the said bearings are curved or roundedhorizontally i-irrthe direction of the length of the bearing's,;;asshown best in Fig. .5, theopposite portions or sides of the guideways34, 34, being correspondingly curved or concaved 'to fit the saidportions of the bearings. The construc- As I'have state shown embodiedherein in a machine in tion and arrangement of the bearings is'such asto permit the latter to assume positions in which they aline themselvesproperly with ositions of the latter.

the shaft 31 in all I above, the invention-1s which the-bed-roll 4 ismade movable awa from and toward the operating or work-r0 l andfeed-roll. The approach of the bed-roll toward the operating orwork-roll is limited by adjustable stops-to which reference is the samefor the purpose of sharpening them necessitates an adjustment of thestops, 'in order thatthe bed-rolLmay be caused to approach to therequired extent toward the operating or work-roll. After the blades orknives of the latter roll have been ground a number of times, .the saidroll becomes so much reduced in diameter that adjustment of the bed-rollshifting mechanism would be' necessary, in orde to produce theconsiderably increased extent of movement of the bedroll which would berequired in order to carry it into proper relations with the operatingor work-roll, if provision were not made for rendering unnecessary thisadjustment of the said shifting m'echanisnr- I prefer to obviate thisnecessity for adjustment of the said shiftin mechanism, or at least anyconsiderable adjustment thereof, by making provision for adjusting theoperating or workroll in a direction toward the bell-roll. Thus, Iemploy in conection with each bearing 33 a spacing-block orchange-block, 332, which is curved to fit the curved exterior of thehearing at either the front or the rear side of the latter, and alsoadapted to be fitted between the bearing and the guideway at either sideof the bearing. These spacinghas been reduced by blocks or change-blocksare placed at the outset at the front of the bearmgs, between the latterand the front walls of the guideways 34, 34. Adjustingscrews 333, 333,applied to the end-frames at the rear of the bearings are turned up soas to engage with the bearings and hold them pressed forward against thespacing-blocks or change-blocks. When the' diameter of the operating orwork-roll rinding, 'or otherwise, suflicientl necessitate the change,the spacing-b ocks or change-blocks are removed from their originalpositions at the front of the bearings and inserted at the rear thereof,

between -the bearings and the adjusting screws '333. The said adjustingscrews are then turned up so as thereby to act against the blocks 332,332, and set the bearings for ward until they touch the front walls ofthe ways is limited by adjustable stops constitutedby screws 53, 53,upon the heads of which latter the bearings normally rest. Springs54,o4, are interposed between the tops of the bearings 51, 51, for thesaid roll and the caps 55, 55, for the guides or ways 52,52. The tensionof each of the said springs is adjusted by means of a screw 56 workingin a threaded hole that is tapped in the'upper part of the correspondingcap, and acting by .its lower end against a plate or washer 57 Fig. 2which rests upon the upper end of the spring, the adjusting screw 56being furnished with a lock-nut 58.

, The mode of mounting the bed-r0114, and of providing for the movementof the same toward and from the other rolls, may in some instances varyin practice. .In conformlty with one feature of the invention, I preferto employ, in connection with the.

' oxes or bearings 41, 41, for the shaft 411 7 amount of independentsliding movement in a direction toward and away from the 0p, eratin orwork-roll and feed-roll. The tension 0 spiral springs 44, 44, which arecompressed between the boxes or bearings 41, 41,

for the bed-roll and abutments at the for- .the

through the toggles to the slide or carrier magma ward ends of theslides, constituted in the present instance by plates or washers 45,Fig; 2, which are backed up by adjusting screws tfi provided withlock-nuts 47, oper' at'eswith a tendencyto" hold the said boxes ofbearings 41, 41, and stops 48 at; the rear ends of the said slides incontact with eachother.

The-stops by which the movement of the bed-roll toward the operating orwork-roll 3 is limitedhre,constitutedby screws 49, 49,- Figs. 1 and 2,set in'holes that are tapped in the end-frames at the rear ends of theguides or ways 52, 52, the slide's'"making contact with'the projectingheads of the said screws.

In machines on the order of that which is illustrated in the drawings ithas been customary heretofore to effectuate the movement of the bed-rolltoward and into contact with the operating or work-roll, or with theoperating or work-roll and feed-roll, as the case may be, bynie'ans ofa't'rea'dle and connections from the same to the bed-roll. The characterand arrangement" of the connections has varied more or less.- Toggleshave of toggles ispivotally mounted upon a stud 62 that is carried bythe corresponding endframeat the forward end of the guide or way 43 withwhich such end-frame is formed or provided. -The upper or inner link (54of each pair of toggles is pivotally' connected, either directly orindirectly, with the corresponding end 'ofthe bed-roll. In Figs 1 to 4-the said upper or inner link 64 is hungupon the corresponding'end of theshaft 411 of the bed-roll 4, so that the movement which is transmittedthrough the toggles is communicated directly to the bed-roll, and hencethe toggles act positively in connection with the bed-roll in moving thelatter toward the operating or work-roll and feed-roll. I

In Fig. (5 the link G l'is connected with a stud 651 carried by theslide or carrier -12, so that the said movement'is communicated to thebed-roll through the medium of the said slide or carrier. In the latterinstance, movement which is communicated in a direction tending'to carrythe bed-roll toward the operating or work-roll and feedroll istransmitted through the intermediary of the spring 44, which iscompressed between the said slide or carrier andth'e box or hearing ofthe bed-roll. Thus, in this arrangement the bed-roll is carried withyielding 'force toward the operating or workroll and feed-roll. Theyielding of the spring 14: enables the bed-roll toaccommothe bed rollismoved with positive force into the same toward and into workingrelations to relieve the workman of the exertion which position, andlocking devices, to hold the bed-roll in its working position, until the"return of the latter to its inoperative posidate itself to unduethickness ciii t he hide or skin intervening between the bed-roll andthe'- operating or work-roll-ijnd'f eeidroll, and to irregularities inthe thickness of the hide or skin as the same may pass between thebed'groll and the other rollsiwhile the hide or s'ki n'is being fedalong, although the elastic covering of the bed-roll'al'so' yields mbreor less, and thus acts to' com pensate forthe' said thickness orir'regl-i la'rities. In the case of the construction and arrangementshown in Figs. 1 to 4:, m which its lworkin'g positioln'undue thicknessor'irregularities in the thickness of the'hide or skin is compensatedfor by the yieldingflof the elastic covering. The operating rods 65, 65,for the respective pairs of toggles extend downward from the latterand'are connected in the lower part of the machine with th'e 1toggle-actuating instrumentalities. ,The eX- ertion which'is required tobe "made by the workman in operating the bed roll to move with theoperating or work-roll and the feed-roll, and in maintaining the saidbedroll in working relations with the other rolls while the hide or skinis being operated upon, is' usually quite considerable, and is greatlyincreasedm machines in which the hide or skin vto be treated retains itsfull original width. Usually only a heavy man is suitable to operate themachine. In order is incident to moving the bed-roll into the saidworking relations, and maintainingit there, I provide power-drivenactuating connections under the control of the workman, by means ofwhich the bed-roll may bemoved automatically into its working tion,apart from the operating or work-roll and feed-roll, is desired. Thepower-driven actuating connections for the bed-roll, and also thelocking devices, may vary in construction and arrangement in someinstances. I will describe the forms thereof which are contained in thepresent embodiment of the invention and illustrated in the accompanyingdrawings. It will be understood that I do not limit myself in allrespects to the particular form, etc., of the devices herein shown. Inthe drawings, the rods 65, 65, extending down from the toggles areconnected with the rearward arms of levers66, 66, which are pivoted uponstuds 67, 67, the latter being carried by the end-frames 1, 2.

For the purpose of enabling the said levers to be actuated, by" power,the forwardly projecting arms thereof are connected by links 71, 71,with arms 72, 72, extending forwardly from a roc'k-shaft 73 which isjournaled in bearings in the said end-frames,

uis rockshaft 73 at one end has fast therewith a gear segment 74 meshingwith a pinion 7 5 loose upon a short shaft 7 6 which is journaled inbearings in the corresponding end-frame 2 and in a stand 8 outside thesaid end-frame. For convenience, in the present instance thegear-segment is formed upon a continuation of one of the arms 72.

The short shaft 76 is continuously driven from the operating orwork-roll 3 through the instrumentality of a band pulley 37 upon thelatter, a crossed driving-band 371 passing from the said pulley to alarger pulley 372 which is fast upon a short shaft 37 3 journaled -inthe end-frame 2 and the small stand 8, a'pinion 3'74 fast/upon the saidshort shaft 373, and intermediate speed-reducing gearing 375, 376, 377,the gear-wheel 377 being fast upon the shaft 76 upon which the pinion 75is loosely mounted. In order to enable the said pinion 75 to beoperatively connected with the shaft 76 when required, for the purposeof causing power to be transmitted through the intermediate connectionsto the toggles, so as to move the bed-roll into working relations withthe other rolls, and also to' enable the said pinion to be disconnectedfrom the said shaft, so as todiscontinue the'application of power to thesaid togg es, the pinion 75 is formed or provided wit 'one member orhalf 751 of a clutch,

the other member or half 761 being mounted uponthe shaft 76 and splinedthereto, and inrconnection with the latter clutch-member amanually-controlled shipper device is employed, comprising a fork 9engaging with the said clutch-member .7 61, a rockshaft 91 i ,on whichthe said fork 9 is mounted, and. a treadle '92 extending from the saidrockshaft 91 in a direction toward the middle of the length ofthe'machine at the front of the latter. Pressure applied by means of thefoot of the workman upon the said treadle 92 will depress the latter soas to rock the rockshaft 91, and through the medium of the shipper-fork9 the clutch-member 761 will be moved longitudinally upon the shaft 76into engagement with the opposing clutchmember 751, whereby the pinion75 will be coupled to the shaft 7 6 so as to turn in unison therewith,and power will be transmitted to the-toggles to operate the same andthereby move the bed-roll into working relations with the operating orwork-roll and feed-' roll.v

In order to cause the opening of the clutch and thereby discontinue thetransmission of power to the toggles as soon as the bed-roll hasv beenmoved inward to the required extent, the rockshaft 73 is provided with acam-projection 77, herein attached to the segment 74, and which, as therockshaft 73 approaches the end of the required extent of movement,encounters an arm 93 projecting from the shipper rockshaft 91, and bypressing the said arm outwardly causes the rockshaft 91 to be turned soas to open the clutch automatically.

The locking devices by means of which the bed-roll is held in workingrelations with the other rolls comprise, essentially, hooks orlatches10, 10 which are pivoted at 101, 101 to the end-frames 1 and 2. Thesehooks or latches 10, 10 'coiipe'rate with projections ment which placesthe bed-roll in working position the said hooks or latches engage withthe said' projections102, 102, on the slides or carriers. Thereby thebed-roll'is retained in its Working position after the clutch pertainingto the poweractuated moving connections for the said roll has beenopened or disconnected; For the purpose of enabling the locking devicesto be operated so as to effect a release of the bed-roll when it isdesired to permit the same 'to move to its inoperative position at thefront of the machine, manually-controlled operating means for the saidlocking devices are provided. In. the present instance, the saidoperating means comprise a treadlellwhich is fast upon a rockshaft 111 journaled in the end-frames 1, 2, the said'rockshaft having rearwardlyextending arms 112, Fig. 2, which are connected by connecting rods 113with the hooks or latches. By pressing upon the said treadle the workmancauses the hooks or latches to be disengaged from the projections 102,102, of the slldes or carriers. In order that when released by thedisengagement of the locks or latches the bedroll may gravitate awayfrom the work or operating-roll and feed-roll, the guides or ways 43,43, are arranged to incline downwardly and forwardly, so that theslidesor carriers 42, 42, may move forward along the same under the influenceof gravity.

When the stop-screws 49, 49, by which the extent of the rearwardmovement of the slides or carriers 42, 42, is determined are adjusted, acorresponding adjustment of projections 1.02, 102, upon the slides orcarriers is made, in order that the hooks orlatches may engage properlywith the said projections, and without permitting any reverse movementof the slides or carriers. In order to provide for the adjustment of thesaid projections upon the slides or, carriers, each projection issecured to the corresponding slide or carrier by means of a bolt 104assing through a longitudinal slot in the Body of the projection intothe slide.or carrier, and'an adjusting screw-105 is provided by roll areprovided. In'the present instance,

' band-pulleyv 12 to a corresponding pulley '15 said short shaft 123, adriving-band 125 passing from the latter pulley to and around stand, apinion 128 on the latter shaft, a I carrier-gear or gears at 129, andalarge gear 1291 upon the shaft of the bed-roll.

2 5 support 127, and from which depends the belt-tight- 1291 on saidshaft in all positions of t e with the shaft 127.

roll. In order to tighten the said driving- 131 by means of which it ismounted u on for engagement with the tending outward from t e end-frame1, the

(30 136 which at its free extremity projectsun means ofwhich theprojection may be moved lengthwise upon the slide or carrier. See

uitable driving connections for the bed the said connections comprise aband-pulley 12 upon one end of the shaft of the operating orwork-roll,as shown in Fig. 1, a driving-band 121 passingv from the said 122 on ashaft 123 which is j'ournaled in bearings which are provided in theendframe 1 and the stand 1231 outside thelat-- ter, another band-pulley124 fast upon the a larger band pulley 126 upon .the' upper shaft 127,which last is ,journaled in bearings in the end-frame 1 and the saidouter The carrier gear or gears 129 is or are mounted upon a stud orstuds carried by a or stand 1292 which at its upper end is sleeved uponthe shaft 411 of the bed-roll and steadied at its lower end by beinforked or slotted to fit over the sleeve or 111% 131 which is mountedupon the said shaft ,ener. The connection of the support or stand 1292with the shaft" of the bed-.roll causes the carrier-gear 129 to continuein proper gear-connection with the lar e ggar ,1. roll, The slotted orsliding fit ofthe said/ support or stan'd in connection with the hub is,inade necessary by the fact that the path of'movement of the bed-roll isnot concentric y'lhe belt 125 connecting the two pulleys 124,- 126, is aslack or loose band and normally does not serve to transmit movement ofthe latter pulley so as to drive the bedband at the required time soasto render it operative to transmit movement of rotation to thebed-roll,'I provide the belt-tightener 13, which is furnished with asleeve or hub the shaft 127, and with a tightener-p ley 132 that isadaptedto'bear against one side of the said slack driving-band. Thebelttightener "arm is furnished with a roll 133 cam-face of a lever 134which is pivoted u on the stud67 exsaid lever 134 having its forward-armpro:- v'ided with a downwardly extendinghook derneath the arm 7 2 at theroximate end of the rock-shaft 73. When t e said rockshaft 73 isoperated b the power vconnections ed upon the shaft of the feed-roll."

which have alrea y been described, so as to move the same for thepurpose of'actuatin the toggles and thereby causing the bed-r01 to bemoved'into working position, the arm 72 in its descent engages with thehook 136 and acts to turn the lever 134 so as to cause 142 so as tocause the brake-shoe 143 to tend v.

to move in a direction to carry-the same into contact with the peripheryof the .bandpulley 126. 'An adjustable stop constituted by a screw 144projects from the brake-lever into position to make contact with aortion of the tightener-arm. When the tig tenerarm is operated so as topress the tightenerpulley againstthe drivin band 125, the tightener-armacts against t e said screw to move the brake'away from the periphery ofthe pulley, but when by the outward movement of the bed-roll theconnected parts are caused to move correspondingly so as to raise thearms 72, 72, of'the' rockshaft 73 and permit the cam-lever 134 andtightenerarm togravitate into their normal and inoperative positions, inwhich the tightenerpulley is withdrawn and the driving-band is permittedto become slack, the brake-lever is left free'to move underthe'influence of its weight so as to cause its brzfke-shoe to engagewith the periphery of the pulley 126 and thereby arrest the rotation ofsuchpulley and-the bed-roll.

For the purpose of causin the feed-roll to turn in unlson with thebed-roll, when the bed-roll occupies its workin o'sition, the shaft ofthe bed-roll is furnished gear 1410, and a similar gear 1411 is mount- 7Whjen the bed-roll occupies its inoperative position at the front of themachine, these gears are. out of mesh with'each other, butwhen an? witha bed-roll is m'oved back into workin .pOSif. tion, thetwo gears comeinto: mes and;

thereby movement) the bed-roll to the feed-roll'. I

" I lay no claim herein to the combination in a leather workingmachine-with anop- 1 eratin-g roll, a feed roll, a'bed roll, and meansfor moving the sai'd'bed roll toward and from the feed roll and the oratin 'roll, of mechanism operated by the ed to in the aforesaidmovement thereof for starting and stopping the feed roll and bed roll,

or to means for starting and stopping the is communicated from ing rollto control said operating device whereby the bed roll and feed roll areset in o eration when the bed roll ispresented to t e operating roll, orto means for rotating the feed rolland bed roll, and a device operatedby the said bed roll in ,the EtfOIGSElld movement thereof forcontrolling the aforesaid rotating means.

u I claim as my invention 1. In an apparatus for treating hides orskins, the combination with an operating roll, and a movable sup ort forthe hide or skin to be treated, one 0 which parts is movable bodily withrespect to the other, of tog- I gles connected with the said movablepart to move the latter into workingrelations with the other, cranks inoperative connection with said toggles for-operating the latter,powerdriven actuatin connections for said cranks,

and a manna y-controlled shipper-device wherebythe said connections maybe made operative to actuate the cranks and'thereby operate the toggleswhen desired, substantially as described.

2. In an apparatus for treating hides or skins, the combination with anoperating roll, and a movable sup ort for the hide or skin to betreated, one 0 which parts is movable bodily with respect to the other,of toggles connected with the said movable part to move the latter intoworking relations with the other, power-driven actuatin connections forsaid toggles embracing a c utch, and a manually-controlled clutchshipper whereby the said connections may be made operative to actuatethe toggles when. desired, substantially as described. 1

3. In an apparatus for treating hides or. skins, the combination with anoperating roll, and a movable sup ort for the hide or skin to betreated, one o *hich parts is movable bodily with relation to the other,of toggles connected with thesaid movable part to mov'ethe latter intoworking relations with the other part, power-driven actuatingconnections for said toggles, a manually-controlled shipper-devicewhereby the said connections may be made operative to actuate thetoggles when desired, and a manuallycontro led lock tO maintain the saidworking relations of the roll and support, substantially' as described.

4. In an apparatus for treating hides or skins, the combination with anoperating roll, anda movable sup ort for the hide or skin to be treated,oneof which parts-is movable bodily with relation to the other,-oftoggles connected with the said movable part to 'nections for saidtoggles embracing a clutch,

a manually-controlled clutch-shipper Whereby the said connections may bemade operative to actuate the toggles when desired, and amanually-controlled lock to maintain the said worklng relations of theroll and support, substantially as described.

5. In an apparatus for treating hides or skins, the combination with theoperating roll, the roll serving as a support for the hide or skin to betreated, means to move one of the said rolls bodily into workingrelations with the other, the slide, the spring between the said slideand the bearing of the bodily movable roll, and the lock engaging saidslide to hold the rolls in working relations, substantially asdescribed. I

6. In an apparatus for treating hides or skins, the combination with theoperating roll, the roll serving as a support for the hide or skin to betreated, power-driven devices to move one of the said rolls bodily into--working relations with the other, the slide,

the sprin between the said slide and the bearing 0? the bodily movableroll, and the lock en aging the said slide to hold the rolls in wor ingrelations, substantially as described.

7. In an apparatus for treating hides or skins, the combination with theoperating roll, the roll serving as a support for the hide or skin to betreated, the toggles, actuating connections for the toggles whereby tocause one of the said rolls to be moved bodily into working relationswith the :other, the slide, the sprln between the said slide and thebearing 0 the bodily movable roll, and the look engaging the sald slideto hold therolls in working relations.

8. In an apparatus for treating hides or skins, the combination with theoperating .roll, the roll serving as a support for the hide or skin tobe treated, the toggles, power-v driven actuating connections for thetoggles whereby to cause one of the said rolls to be moved bodily intoworking relations with the other, the slide, the spring between the saidslide and the bearing of the bodily movable roll, the lock engaging thesaid slide to "hold the rolls in working relations, .and

a manual'controlling device'whereby said power-driven actuatingconnections may be rendered operative'when desired.

9. 'In an apparatus for treating hides or skins, the combination withthe operating roll, the roll serving as a support for the hide or skinto be treated, drivlng connections adapted to rotate the said supportingroll,

power-driven devices to move one of the said 'rolls bodily with respectto the other and into working relations with the latter, and

also adapted to render such driving connections operative to actuate thesupporting roll,

, or skin to be treated, driving connections hide or skin to be treatedis backed up while tates the introduction of a hide or skin be- Y roll,and a bed-roll, of devices for producing v to enable the operatingrollto act u on a said devices to actuate the latter.

.vices may bev rendered operative when de .tates the introduction of ahide or skin becontrolled lock whereby the rolls are retained trolledlock whereby the rolls are retained in such relations, and a s rin and aclutch whereby said power-driven desired, substantially as described 10.In an apparatus for treatinghides or skins, the combination with theoperating roll, the roll serving as a support for the hide adapted torotate the said supporting roll, toggles whereby to move one of the saidrolls bodily with respect to the other roll and into working relationswith the latter, powerdrivendevices to actuate the said toggles and alsorender the said driving connections 0perative to actuate the supportingroll, and a clutch whereby said power-driven devices may be renderedoperative when desired, substantially as described.

11. In an apparatus, for treating hides or skins, the combination withthe work-roll having an abrading periphery, andthe bedroll having ayielding periphery by which the hide or skin to be treated-is backed upwhile being acted upon by the periphery of the work-roll, and means fordifferentially rotating the said rolls, the latter normally occupying aseparated position which facilitween them, of means to cause relativebodily movement of the said rolls into working relations with eachother, and a manuallyinsuch relations. v

12. In an apparatus-for treating hides or skins, the combination withthe work-roll having an abradi'ng periphery, and the bedroll having ayielding exterior by which the being acted upon by the periphery .of thework roll,'and means for differentially rotatin the said rolls, 'thelatter normally occupying a separated position which facilitween them,of means to cause relative bodily movement of the said rolls intoworking relations with each other, a nanually-conwhich permits relativeyieldin bodi y. OI the rolls to accommodate the thickness of the hide orskin. 1 i

- 1 3; In an apparatus for treating hides or skins, the combination withan operating relative bodily approach of the said rolls and locking themin close working relations hide or skin supported by the be -roll,-power driving-connections for the devices for causing such approach and-manually operable means forshipping said driving.- connections intodriving, relations with the 14. In an apparatus for treating hides orskins, the com ination with an operating roll, and a bed-roll, ofdevices for produc-i the operating roll to act upon a hide or skin tionsinto driving relations with the said working relations with the otherthereof,

.one of the said rolls to move the latter into workingrelations with theother roll, and

ing relative bodily approach of the said rolls to enable the operatingroll to act-upon a hide or skin suppo'rted'by the bed-roll,-

power driving-connections for the said devices, manually-operable meansfor shipping said driving-connections into driving relations with thesaid-devices to actuate the latter, and a maiuially controlled lockacting to retain the rolls in the relative'position thus given to themuntil released by the disengagement of such lock.

15. In an apparatus for treating hides or skins, the combination with'an operating roll, and a bed-roll, of devices for producing movement ofone of said rolls into working relations with theother thereof, toenable supported by the bed-roll, power drivingconnections for the saiddevices, manuallyoperable means for shipping said .connecdevices toactuate the latter, and a lock acting to retain the niovably-mountedroll in the said working relations with the other thereof.

16. In an apparatus for treating hidesor skins, the coinbinatioirwith anoperating roll, and a bed-roll, of devices for producing movement of oneof said rolls into working relations with the other thereof to enablethe operating roll to act u on a hide or skin supported by the bed-r01power driving-- connections for the said devices, manuallyoperable meansfor shipping said connections into driving relationswith the saiddevices to actuate the latter, a lock acting to retain themovably-inounted roll in the said and a spring to permit one roll toyield relative. to the other to accommodate the thickness of the hide orskin.

17. In an apparatus for treating hides or skins, the combination with anoperating roll, a roll serving as asupport for the hide or skin to betreated, toggles connected with power-driven actuating connectionsforsaid toggles, of .a manually-controlled lock whereby the movably mountedroll is held in the said relations, subst antially as described.

18. In an apparatus for treating hides or skins, the combination with,an operating roll, a roll serving as a support for the hide or skin tobe treated,- toggles connected with one of the said rolls to move thelat-terinto working relations with the other roll, andpower-drivenactuating connections forsaid toggles, of a manually-controlled lockwhereby the movably mounted roll is held in the said relations, and aspring to permit the roll to yield bodily to accommodate the thicknessof the hide or skin, substantially as described.

19. In an apparatus fortreating hides or skins, the combination with anoperating roll, a roll serving as a support for the hide or skin to betreated, means'to move -one of the said rolls bodily with respect to'the other into working relations with the latter,

a slide movable in unison with the said bodily movable roll, a springcompressed between the bearings for the said roll and the 'roll havingan abrading periphery, a roll having a yielding exterior serving as asup:

port for the hide or skinwhile being actedupon by the said operatingroll, means whereby the said rolls will normally stand separated fromeach other, and means to move one of the said rolls bodily with, respectto the other into Working relations with, the

latter, of a carrier for the bearing of the bodily-movable roll, aspring interposed between the said bearing and the said carrier, and amanuallycontrolled'lock engaging with the said carrier to hold the saidroll i in the said workingrela-tions.

21. In an apparatus for treating hides or skins, the combination with anoperating roll, a roll serving as a support for the hide or skin to betreated, power-driven devices to move one of the said. rolls bodily withrespect to the other into working relations with the latter, and amanuallycontrolled shipper whereby the said devices may be madeoperative when desired, of a carrierfor the bearing of the bodilymovable roll, a sprin interposed between-the said bearing and the saidcarrier, and a manually controlled lock engaging with the. said carrierto hold the said roll in the said workin relations, substantially asdescribed. I

22, In an apparatus for treating hides or skins, the combination with anoperating roll, a roll serving as a' su port for the hide or skin to betreated, togg es connected with one of the said rolls, power-drivenconnec tions for said toggles to actuate the latter to movethe said rollbodily with respect to the other into working relations with the latter,and a manually-controlled shipper whereby the said connections may be=made operative to actuate the toggles when desired, of a carrier forthe bearing of the bodily movable roll, a spring interposed between thesaid bearing and the said carrier,"

and a manually-controlled lock engaging with the said carrier to holdthe said roll in the said working relations, substantially as described.

28. Inan apparatus for treating hides or skins, the combination with anoperating roll, a roll serving as a support for the hide or skin whilebeing acted upon bythe operating roll, means whereby one of the saidrolls will normally stand separated from the;

other thereof, to permit of-the introduction of a hide or skin betweenthem, a carrier for ihe said roll, and mechanism engagingwith saidcarrier to close the rolls together, of a 1uanually-controlled lockdirectly cotiperating with the said -carrier to hold its rollin workingrelations with the other roll, substantially as described.

24. In an apparatus for treating hides or skins, the combination with anoperating roll, a roll serving as a support for the hide I or skin to betreated, a movable carrier for one of the said rolls, toggles connectedwith the said'carrier to move the latter to carry its roll intoworkingrelations with the other roll, means to actuate the said toggles,and ainanually-controlled lock whereby the said relations'aremaintained, substantially as described.

- 25. In an apparatus for treating hides or skins, the combination withan operating roll, a roll serving as a support for the hide 1 or skin tobe treated, a movable carrier for one of the said rolls, togglesconnected with the said carrier to move the same to place its roll inworking relations with the other roll, power-driven actuatingconnections for said toggles, a manually-controlled shipper-de or'ski'nto be treated, a movable carrier for' one of the said rolls, togglesconnected with the .said carrier to move the said roll into workingrelations with the other roll, power driven actuating connections forsaid toggles, embracing a clutch, a manually-controlled shipper-devicewhereby the said connections may be made operative to actuate thetoggles when desired, and a manually-. controlled lock .whereby the saidrelations are maintained, substantially as described.

27. In .an apparatus for treating hides or skins, .the combination withan operating roll having a yielding periphery, a roll having a yieldingexterior serving as a support for the hideor skin while being acted uponby the operating roll, means whereby the said rolls will normally standseparated from each other, a movable-carrier provided with yieldingbearings for one of the said rolls, and means to move the carrier tolace its roll in working relations with the ot er roll,

of a manually-controlled lock whereby the j said-carrier is held in theposition given it by the said means.

28. In an apparatus for treating hides or skins, the combination with anoperating 29. In an apparatus for treating hides or with an operatingort for the hide or which parts is movskins, the combination roll, and amovable sup skin to be treated, one o able bodily 'with relation to theother and.

normally gravitates into a position separated therefrom, of togglesconnected with the said movable part to move the latter into workingrelations with the other, a shaft in operative connection with the saidtoggles to J-actiiate the same, atoothed segment con.-

nected with the said shaft, a gear engaging with the said segment,driving'connections for said ear, and a shipper whereby, the driving ofsaid gear is controlled.

30.- In an apparatus for treating hides or skins, the combination withan operating roll, and a movable support; for the hide or I skin to betreated, one of whicliparts is movable bodily with relation to the otherand normally gravitates into ,a position separated therefrom, of togglesconnected with the said movable part to move the latter into workingrelations with the other, a shaft in operative connection'withthe said-toggles to actuate the same, a toothed segment connected with the saidshaft, a gear engaging with the said segment, driving connections forsaid gear, a shipper whereby the driving of said gear is controlled, anda lock whereby the bodily-movable part may be held in working positionafter being moved into the latter by the action of the toggles.

31. In an apparatus for treating hides or skins, the combination with anoperating roll, a movable support for the hide or skin to be treated,one of which parts is movable bodily with relation to the other andnormallygravitates into a position separated therefrom, and drivingconnections for rotating the said movable support, of toggles connectedwith the said movable part to move the latter into working relationswith the other, a shaft in operative connection with the said toggles toactuate the latter, devices under operative control of said shaftwhereby the action of the said driving-connections is controlled, atoothed segment connected with the said shaft, a gear engaging with thesaid segment, driving-connections for said driving of said gear iscontrolled.-

roll, and a movable support for-the hide'or' skin to be treated','of thetoggles for moving ear, and a shipper whereby the 32. In an a parat'iisfor treating hides or skins, incom mation', an operating roll, 'a'support forthe hide or skin to be treated,

one of which parts is movable bodily with relation tothe' other, meansfor oc'c'asioning the sa d bodily movement, driving connecener'to act inconnectionwith the said driving-band, and the movable cam-piece operatively connected with whereby the belt-tightener is caused to act.

33.- In an apparatus for treating hides or'- skins, in combination, anoperating roll, a support for thehide or skin to be treated, one ofwhlch parts is vmovable bodily with relation'to the other, togglesconnected with said movable part, an operating shaft connected with saidtoggles whereby to ct'uate the latter to occasion the bodily mov xment,driving-connections 'for rotating the said support embracing a'slackdriving-band and band-pulleys around which the same passes, thebelt'tightener to act iii-connection with the said driving-band, and'themovable campiece operatively connected with the said shaft and wherebythe; belt-tightener is caused toact. 34. In an apparatus for treating'hides or skins, 1n combmat on, an, operatmgroll, a I

support for the hide or skin to be treated, one .of which parts ismovable bodily with relation to the other, means for occasioning thesaid bodily movement,- connections for rotating the sald supportembracing a slack driving-band and band-pulleys around which thebelt-tightener to act in. connection with the said. driving-band, the

the same passes,

movable. cam-piece operatively connected with the said means and wherebythe belttighte-ner is caused to act, and the brake in operativeconnection with the said belttightener.

35. In an apparatus for treating hides or skins, in combination, anoperating roll, a support for the hide or skin to be treated, one oflwhich parts is movable bodily with relation to the other, togglesconnected with said movable part, an operating shaft con nected withsaid toggles whereby to actuate driving-connections Ifor rotating thesaid the latter to occasion the bodily movement, support embracing aslack driving-band and band-pulleys around which the sam'e'passes, thebelt-tightener to act in connection with the said driving-band, themovable cam "piece operatively connected with the said shaft and wherebythe belt-tightener is caused to act, and the brake in operativeconnection with the said belt-tightener;

36. In an apparatus for treating hides or skins, the combination withthe operating roll, a bed-roll, and a movable carrier for one of suchrolls, of automatic means for operattions' for rotating the" saidsupport embmo mg a slack driving-band and band-pulleys around which thesame'passes,the belt-tight the said means and tighten v the said ingsaid carrier to move the said roll into working relations with the otherroll, a manual controlling device for such means, and drivin ing a slacdrivin -band and means to riving-band upon its pulleys when the .rollsare in the said worklng relations.

37. In an ap aratus fortreating hides or skins, the com ination with anoperating roll, and a bed-roll, of devices for producing relative bodilyapproach of the said rolls and locking them in close working relationsto enable the operating roll to act upon a hide or skin when supportedby the bed-roll, power drivingconnections for the devices for causingsuch approach, manually-operable means for shipping the said connectionsinto driving relations with the said devices to actuate the latter, anddriving devices acting to drive the bed-roll when the two rolls occu yworking relations with respect to each ot er and to discontinuethedriving thereof when the said relations are termii actuate the saiddevices, and means acting nated.

38. In an ap aratus for treating hides or skins, the com ination with anoperating roll, a roll-serving as a support for the hide or skin whilebeing acted upon by the o rating roll, devices to close the said rol stogether upon a hide or skin introduced be. tween them,power-connections for the said devices, manually-controlled means forrendering said power-connections:operative to [SEAL] Corrections inLetters Patent No. 904,079.

devices for the bed-roll inc1ud-' operating to retain the said rolls 1nclosed relation.

39. In an apparatus for treating hides or skins, the combination with anoperating roll, a roll serving as a support for the hide or skin whilebeing acted upon by the operatactuate the said devices and lockingdevices ing roll, devices to close the said rolls to-v gether upon ahide or skin introduced between them, power-connections for the saiddevices, a manually-controlled clutch for rendering saidpower-connections operative to actuate the said devices, and means toterminate the closing action when the rolls come together.

v4O. In an apparatus for treating'hides or skins, the combination withan operating roll, a, roll serving as a supportfor the hide or skinwhile being acted upon by the operating roll, devices to close the saidrolls together. upon a hide or skin introduced. be-v tween them,power-connections for the said:

devices, manually-controlled means for rendering said power-connectionsoperativeto same may conform to the record of the case in the PatentOflice.

Signedandsealed this 29th day of December, A. D., 1908.

' o. c. BILLINGS,

Acting Commissioner of Patehta.

It is hereby certified that in Letters Patent No. 904,079 grantedNovember 17, 1908 ,0. upon the application of Daniel P. OBrien, ofWobnrn, Massachusetts, for an improve.- mentin. Machines for TreatingHides or Skins, errors appear in the printed specifica tion requiringcorrection,'as follows: In line 58, page 2, the compound word be11-"roll shouldread bed-roll, and page 9, the lines 17 and 18 should betransposed; and that the said Letters Patent should be read with thesecorrections therein that the tighten v the said ing said carrier to movethe said roll into working relations with the other roll, a manualcontrolling device for such means, and drivin ing a slac drivin -bandand means to riving-band upon its pulleys when the .rolls are in thesaid worklng relations.

37. In an ap aratus fortreating hides or skins, the com ination with anoperating roll, and a bed-roll, of devices for producing relative bodilyapproach of the said rolls and locking them in close working relationsto enable the operating roll to act upon a hide or skin when supportedby the bed-roll, power drivingconnections for the devices for causingsuch approach, manually-operable means for shipping the said connectionsinto driving relations with the said devices to actuate the latter, anddriving devices acting to drive the bed-roll when the two rolls occu yworking relations with respect to each ot er and to discontinuethedriving thereof when the said relations are termii actuate the saiddevices, and means acting nated.

38. In an ap aratus for treating hides or skins, the com ination with anoperating roll, a roll-serving as a support for the hide or skin whilebeing acted upon by the o rating roll, devices to close the said rol stogether upon a hide or skin introduced be. tween them,power-connections for the said devices, manually-controlled means forrendering said power-connections:operative to [SEAL] Corrections inLetters Patent No. 904,079.

devices for the bed-roll inc1ud-' operating to retain the said rolls 1nclosed relation.

39. In an apparatus for treating hides or skins, the combination with anoperating roll, a roll serving as a support for the hide or skin whilebeing acted upon by the operatactuate the said devices and lockingdevices ing roll, devices to close the said rolls to-v gether upon ahide or skin introduced between them, power-connections for the saiddevices, a manually-controlled clutch for rendering saidpower-connections operative to actuate the said devices, and means toterminate the closing action when the rolls come together.

v4O. In an apparatus for treating'hides or skins, the combination withan operating roll, a, roll serving as a supportfor the hide or skinwhile being acted upon by the operating roll, devices to close the saidrolls together. upon a hide or skin introduced. be-v tween them,power-connections for the said:

devices, manually-controlled means for rendering said power-connectionsoperativeto same may conform to the record of the case in the PatentOflice.

Signedandsealed this 29th day of December, A. D., 1908.

' o. c. BILLINGS,

Acting Commissioner of Patehta.

It is hereby certified that in Letters Patent No. 904,079 grantedNovember 17, 1908 ,0. upon the application of Daniel P. OBrien, ofWobnrn, Massachusetts, for an improve.- mentin. Machines for TreatingHides or Skins, errors appear in the printed specifica tion requiringcorrection,'as follows: In line 58, page 2, the compound word be11-"roll shouldread bed-roll, and page 9, the lines 17 and 18 should betransposed; and that the said Letters Patent should be read with thesecorrections therein that the Corrections in Letters Patent No. 904,079.

It is hereby certified that in Letters Patent No. 904,079, grantedNovember 17, 1908, upon the application of Daniel P. OBrien, of Woburn,Massachusetts, for an improvement in Machines for Treating Hides orSkins, errors appear in the printed specification requiring correction,as follows: In line 58, page 2, the compound word bellroll should readbed-roll, and page 9, the lines 17 and 18 should be transposed; and thatthe said Letters Patent should be read with these corrections thereinthat the same may conform to the record of the case in the PatentOflice.

Signed and sealed this 29th day of December, A. D., 1908,

C. C. BILLINGS, Acting Commissioner of Patents.

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